231201223331 has 8 divisors (see below), whose sum is σ = 248993178000. Its totient is φ = 213410303712.

The previous prime is 231201223291. The next prime is 231201223339. The reversal of 231201223331 is 133322102132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231201223331 - 2³⁴ = 214021354147 is a prime.

It is a super-2 number, since 2×231201223331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231201223297 and 231201223306.

It is not an unprimeable number, because it can be changed into a prime (231201223339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240920 + ... + 721418.

It is an arithmetic number, because the mean of its divisors is an integer number (31124147250).

Almost surely, 2^231201223331 is an apocalyptic number.

231201223331 is a deficient number, since it is larger than the sum of its proper divisors (17791954669).

231201223331 is a wasteful number, since it uses less digits than its factorization.

231201223331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517525.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231201223331 its reverse (133322102132), we get a palindrome (364523325463).

The spelling of 231201223331 in words is "two hundred thirty-one billion, two hundred one million, two hundred twenty-three thousand, three hundred thirty-one".